Device for removing mushroom-shaped corks

Abstract: Device for removing mushroom-shaped corks (11), which can be gripped and operated by hand and is suitable to remove mushroom-shaped corks (11) consisting of cork or a plastic from bottles of sparkling wine, such sparkling wine bottles being possibly of a type with a neck (12a) containing a protruding ledge (22) or with a neck (12b) suitable for crown corks, the device comprising an outer shell (13) including in its lower portion a supporting ring (14) solidly fixed longitudinally to, and free to rotate circumferentially in relation to, the outer shell (13), an extractor element (16) being secured circumferentially to the supporting ring (14) and being able to move axially between a first lower end-of-travel position (16a) and a second upper end-of-travel position (16b), the supporting ring (14) including in its lower portion supporting elements (21) which cooperate with the protruding ledge (22) on the neck (12) of the bottle, the extractor element (16) comprising in its lower portion anchorage and clamping arm means (19) which are equipped at their lower inner ends with claw means (20), which cooperate with the base of the upper head (111) of the mushroom-shaped cork (11), and are equipped at their lower outer ends with elements (24) having an inclined surface and cooperating with abutment elements (25) included on the inner surface of the supporting ring (14).

Description: This invention concerns a device to draw mushroom-shaped corks, as set forth in the main claim. The device to draw mushroom-shaped corks according to the invention is employed to uncork bottles, which are advantageously bottles containing sparkling wine, such as champagne or other sparkling wines, the bottles being closed with a cork formed as a mushroom. The device to draw mushroom-shaped corks is able to draw such corks made of cork or of a plastic from bottles which may be of a type with a neck containing a protruding ledge or of a type with a neck for crown corks. Bottles are known which normally contain sparkling wines and are closed with a mushroom-shaped cork consisting of cork or a plastic and generally retained by a suitably intertwined metallic wire to prevent the cork emerging independently. These mushroom-shaped corks are generally drawn by hand by rotating the cork in its seating and withdrawing it progressively. These operations are not always easy to carry out inasmuch as in some cases, if the cork is especially tightly sealed, the rotation of the cork requires a great effort and therefore some persons cannot uncork the bottle. Moreover, the outer shape of the protruding head of the cork, which has substantially the form of a mushroom, does not make possible an easy engagement by the user as his hand slips on the circumferential surface of the mushroom-shaped head. Furthermore, it often happens during the drawing operations that the cork comes out unexpectedly and independently without the user being able to hold it, thus causing damage to objects and persons along the path of the cork with all the unpleasant consequences involved. Devices to draw mushroom-shaped corks have been disclosed but have been found to be not very practical and hard to use. A first type of device disclosed consists of a kind of gripper of a nut-cracker type, the jaws of which are tightened about the head of the cork; the device is rotated by means of its arms, with the bottle held stationary, so as to draw the cork from the mouth of the bottle. This device enables corks to be drawn even when they are especially tightly sealed, but the corks may prove to be dangerous if they emerge violently and unexpectedly. Another type of disclosed device is shaped as a gripper, in which one end of the jaws includes lateral fork means that are inserted sideways between the lower base of the head of the cork and the mouth of the bottle. In this case the cork is not gripped between the jaws, but the fork means act as a lifting element. To be more exact, the two arms are brought towards each other and a first fork means is rested on the neck of the bottle, while the other fork means is distanced from the first fork means and thus raises the cork. This device too to draw the cork has been found to be not very practical and does not ensure the drawing of the cork in one single operation. US-A-4,606,245 describes a device to draw mushroom-shaped corks which can be gripped manually and comprises an outer shell including in its lower part a supporting edge and an extractor element which moves axially inside the outer shell from an upper end-of-travel position to a lower end-of travel position. The supporting edge cooperates with the neck of the bottle, while the extractor element comprises at the lower part anchorage and clamping means equipped at their lower ends with claw means, which cooperate with the base of the upper head of the mushroom-shaped cork. The anchorage and clamping means cooperate with thrust means on the inner surface of the outer shell in order to push the claw means below the base of the mushroom-shaped cork. The device to draw corks described in this document has a plurality of disadvantages. The opening/closing of the claw means is conditioned by the position of the terminal end of a tubular element inside the outer shell and by the conformation of the shoulders of the bottle which define the support for the outer shell. For this reason, the device, is designed for specific bottles with a defined conformation and size of the neck and of the shoulders; every time there is a different conformation of the bottle, the inner tubular element or the outer shell must be substituted. Moreover, in US'245 the extractor element does not run in vertical guides in the tubular element and therefore, when it is dirty or under pressure, it may not rotate on the lower pin of the screw. Thus the extractor element moves both axially and circumferentially while it is rising and descending with respect to the outer shell, so that the necessary force needed to extract the cork is greater and the stresses induced on the cork are also greater. Moreover, the extractor element is laterally guided due to the simple mutual friction between the surfaces so that in a short time preferential sliding lines are formed which in the long term make extraction difficult. The device to draw corks described in EP-A-276.091 grips the cork using a device which is open at both sides (Figs. 4 and 7) which are then stabilised on the cork thanks to the collar (70). EP'091 then teaches that the stopper-gripping member (50) runs on the guides (42) which are not rigid but which are positioned thanks to the collar (70). Moreover, the plate (16) tomes into contact with the cork (60) only when the latter is completely extracted (Fig. 6), so that if the cork is expelled by the gas present inside the bottle, it is free to go where it wants, even into somebody's face. The present applicants have designed, tested and embodied this invention so as to overcome the shortcomings of the state of the art and to achieve further advantages. This invention is set forth and characterised in the main claim, while the dependent claims describe variants of the idea of the main embodiment. The purpose of the invention is to provide a device which draws in a sure and controlled manner mushroom-shaped corks from bottles, which are advantageously bottles containing sparkling wines, without problems of the slipping of the device on the cork and without any risks of damage to things or persons positioned in the vicinity of the user during the uncorking operations. The device to draw mushroom-shaped corks according to the invention consists of an outer shell which is open at its lower end and acts also as a grip for the user. This outer shell includes in its lower portion a supporting ring, which can rotate about the lengthwise axis of the shell and of which the lower surface is equipped with supporting elements suitable to cooperate with the upper side of the protruding ledge included in the upper end portion of the neck of the bottle. The outer shell contains an extractor element, which is axially movable but is circumferentially prevented from rotating in relation to the supporting ring and is suitable to be anchored to the base of the head of the cork and between that base and the lip of the mouth of the bottle. The axial travel of the movable extractor element is defined between at least two end positions within the outer shell. These two end positions correspond to a first lower position at the beginning of the drawing and a second upper position at completion of the drawing. The lower end part of the movable extractor element includes anchorage and clamping arm means, which comprise claw means solidly fixed to the lower end of those am means and able to cooperate with the base of the head of the cork. During the axial ascending movement of the movable extractor element within the outer shell the anchorage and clamping arm means cooperate with the inner surface of the supporting ring and are thrust radially inwards, thus clamping the head of the cork circumferentially. According to a special form of embodiment the movable extractor element contains a cork-thrusting element, which advantageously can move axially within the movable extractor element and is thrust resiliently towards the cork. The cork-thrusting element has a first inactive position, in which the resilient means are fully distended, and a second working position, in which the resilient means are at least partly compressed. When the device to draw mushroom-shaped corks according to the invention has been placed from above on the head of the cork to be drawn, the cork-thrusting element is rested resiliently on the upper surface of the head of the cork and enables the movement of the cork to be cushioned when the cork has been finally drawn. The cork-thrusting element performs also the main task of correctly positioning the anchorage and clamping arm means axially on the head of the cork. This cork-thrusting element ensures in particular that the claw means in the lower part of the anchorage and clamping arm means are positioned correctly to cooperate with the base of the head of the cork and thus to prevent the claw means becoming anchored to the lip of the mouth of the bottle. A further purpose of the cork-thrusting element is to thrust the cork always towards the outside of the device according to the invention when the cork has been drawn from the bottle. In this way the cork cannot become inclined and jammed within the device according to the invention, and the operations of disengaging the cork from the uncorking device are thus facilitated. In the device that draws mushroom-shaped corks according to the invention the axial movement of the movable extractor element is ensured by screw-threaded means, which convert the rotation of the outer shell into a relative axial movement of the extractor element. So as to draw the cork, the user grasps the bottle and the supporting ring and rotates the outer shell. According to another form of embodiment the supporting ring is divided into two parts, namely a first upper part that acts as a grip and a second lower part that has the task of clamping the movable extractor element on the head of the cork. The first and second parts are clamped together in the longitudinal direction but are free to rotate reciprocally about their own lengthwise axis by a desired angle. In this case the circumferential clamping of the anchorage and clamping arm means on the head of the cork is achieved by rotating the lower part of the supporting ring by hand while the upper part of the supporting ring is kept stationary by the user; the uncorking operations then proceed as cited above. The attached figures are given as a non-restrictive example and show some preferred embodiments of the invention as follows:- Fig.1 shows a first form of embodiment of the device to draw mushroom-shaped corks according to the invention; Fig.2a shows a lengthwise section, along the line A-A, of the device of Fig.1 during the step of positioning the device on the head of a cork fully inserted into the neck of a bottle, one half-section showing a bottle with a cork and a protruding ledge, while the other half-section shows a bottle with a crown cork; Fig.2b shows a lengthwise section, along the line A-A, of the device of Fig.1 during the step of substantial completion of drawing of the cork; Fig.3 shows a second form of embodiment of the device to draw mushroom-shaped corks according to the invention; Fig.4a shows a lengthwise section, along the line B-B of Fig.5a, of the device of Fig.3 positioned in cooperation with the head of the cork to be drawn, one half-section showing a bottle with a cork and protruding ledge, while the other half-section shows a bottle with a crown cork; Fig.4b shows a lengthwise section, along the line C-C of Fig.5b, of the device of Fig.3 with the cork fully drawn out; Fig.5a shows a cross-section, along the line D-D of Fig.4b, of the device of Fig.3 to draw mushroom-shaped corks; Fig.5b shows a cross-section, along the line E-E of Fig.4b, of the device of Fig.3 to draw mushroom-shaped corks; Fig.6a shows a lengthwise section, along the line F-F of Fig.6b, of the device of Fig.3 during an intermediate phase of positioning the device on the head of the cork; Fig.6b shows a cross-section, along the line G-G of Fig.6a, of the device of Fig.3 to draw mushroom-shaped corks from a bottle with a neck for crown corks. The reference number 10 in the attached figures denotes generally a device to draw mushroom-shaped corks according to the invention. The device 10 has the purpose of drawing a mushroom-shaped cork 11 inserted into a neck 12 of a bottle. The bottle may be of a type with a neck 12a comprising a protruding ledge or with a neck 12b suitable for crown corks. The drawing device 10 according to the invention in a first form of embodiment shown in Figs.1 and 2 comprises a substantially cylindrical outer shell 13. The outer shell 13 cooperates at its lower end with a supporting ring 14 clamped axially to the outer shell 13 but free to rotate in relation to the outer shell 13. Antifriction ring means 15 are included in this case and are positioned between the outer shell 13 and the supporting ring 14. An axially movable extractor element 16 is contained in the outer shell 13 and has a first lower end-of-travel position 16a and a second upper end-of-travel position 16b; these end-of-travel positions 16a-16b are determined by the cooperation of a protrusion 17 located on the outer periphery of the extractor element 16 with respective lower 18a and upper 18b undercuts in the inner surface of the outer shell 13. The extractor element 16 comprises in its lower portion a plurality of anchorage and clamping arms 19 arranged on its circumference and able to be displaced resiliently in a radial direction. These anchorage and clamping arms 19 cooperate with the circumferential surface of the head 111 of the cork 11 and include inwardly facing claws 20 in cooperation with their lower end. These claws 20 cooperate with the base of the head 111 of the cork 11. Next, the anchorage and clamping arms 19 include inclined surface means 24 corresponding with the claw 20 but facing outwards. During the axial movement of the extractor element 16 within the outer shell 13 the inclined surface means 24 cooperate with abutments 25 located in a coordinated position at an intermediate height within the supporting ring 14. This cooperation not only prevents rotation of the extractor element 16 in relation to the supporting ring 14 but also causes an inward radial thrust of the claws 20, which are thus positioned at the base of the head 111 of the cork 11 and clamp the head 111 circumferentially. The axial movement of the extractor element 16 within the outer shell 13 is ensured in this case by screw-threaded means comprising an outer screw thread 23a on the extractor element 16; this outer screw thread 23a cooperates with a mating inner screw thread 23b on the inner surface of the outer shell 13. It is thus enough to rotate the outer shell 13 clockwise or anti-clockwise while keeping the bottle and the supporting ring 14 stationary so as to cause a relative axial movement of descent or ascent of the extractor element 16 in relation to the outer shell 13. The supporting ring 14 comprises at its lower end suitably shaped supporting elements 21 which during the uncorking step, as will be made clear hereinafter, rest on the upper surface of the protruding ledge 22. In this case a cork-thrusting element 26 is included within the extractor element 16 and cooperates at its lower end with the head 111 of the cork 11 and at its upper end with a resilient spring 27. The cork-thrusting element 26 can move axially within the extractor element 16 and has a first lowered inactive position defined by cooperation of a circumferential projection 28 with an abutment face 29. The uncorking operations performed by the device 10 that draws mushroom-shaped corks 11 according to the invention are carried out by a user by hand and include the following steps: passing the device 10 that draws mushroom-shaped corks 11 from above onto the neck 12 of a bottle until the anchorage and clamping arms 19 are positioned in cooperation with the head 111 of the cork 11; the user then grasps the bottle and the supporting ring 14 and rotates the outer shell 13, thus causing the progressive lowering of the drawing device 10 until the supporting elements 21 of the supporting ring 14 are in contact with the protruding ledge 22 of the neck 12 of the bottle, with simultaneous clamping of the head 111 of the cork 11 by the anchorage and and clamping arms 19 when the inclined surface means 24 cooperate with the abutments 25; further rotation of the outer shell 13 now causes reascent of the extractor element 16 within the outer shell 13, and the extractor element 16 draws the cork 11 with it in its movement of re-ascent. The cork 11 is fully or substantially fully drawn from the bottle at the end of rotation of the outer shell 13. According to another form of embodiment shown in Figs.3 to 6 the device 110 to draw mushroom-shaped corks 11 according to the invention comprises an outer shell 113 cooperating with a supporting ring 114 consisting of two parts, namely a lower part 114a and an upper part 114b respectively. The upper part 114b acts as a grip, while the lower part 114a is associated at its lower end with the neck 12 of the bottle. The lower 114a and upper 114b parts are clamped together longitudinally but are capable of reciprocal rotation about their lengthwise axis. In this case the lower part 114a of the supporting ring 114 contains a plurality of clamping wedges 30 in a number and in positions coordinated with the anchorage and clamping arms 19 comprised on the extractor element 16. The lower part 114a of the supporting ring 114 has a first angular insertion position 214a, in which the anchorage and clamping arms 19 are free to expand resiliently outwards so as to adapt themselves to the variable diameter of the head 111 of the cork 11 (Figs.4a and 5a), and also has a second angular clamping position 214b, in which the clamping wedges 30 cooperate at their rear with the respective anchorage and clamping arms 19, which thus secure the claws 20 to the base of the head 111 of the cork 11 so as to ensure correct drawing of the cork 11 (Figs.4b and 5b). These respective angular positions of insertion 214a and clamping and drawing 214b are indicated advantageously with reference notches 31 on the outer surface of the drawing device 110 for mushroom-shaped corks 11 above and below the line separating the lower 114a and upper 114b parts of the supporting ring 114. When the lower part 114a of the supporting ring 114 has been brought to the second angular clamping position 214b, the drawing operations proceed as described above, by blocking rotation of the supporting ring 114 and by rotating the outer shell 113. According to a variant, for correct positioning of the drawing device 110 for mushroom-shaped corks 11 according to the invention on bottles having a neck 21b suitable for crown corks (see the righthand part of the Figs. 4a, 4b and 6a), the supporting ring 114 may include auxiliary supporting elements 121 of a resilient type. These auxiliary supporting elements 121 of a resilient type are placed in a position below the supporting elements 21 and cooperate with the protruding ledge 22 of the neck 12b of the bottle so as to position the cork drawing device 110 correctly on the head 111 of the cork 11. According to a further variant the lower part 114a of the supporting ring 114 contains a plurality of ribs 32 arranged in a number and in positions coordinated with the auxiliary supporting elements 121 of a resilient type. These ribs 32 are caused to cooperate with the auxiliary supporting elements 121 of a resilient type by clamping them radially in a third angular position 214c (Figs.6a-6b), which corresponds to the positioning of the drawing device 110 for mushroom-shaped corks 11 according to the invention on the head 111 of the cork 11 of a bottle having a neck 12b suitable for a crown cork. This third angular position 214c too is indicated advantageously with the reference notches 31 on the outer surface of the device 110 that draws mushroom-shaped corks 11.

Claims: Device to draw mushroom-shaped corks (11), which can be gripped and operated by hand and is suitable to draw mushroom-shaped corks (11) consisting of cork or a plastic from bottles of sparkling wine, such sparkling wine bottles being possibly of a type with the upper part of the neck shaped like a narrow band (12a), or with a neck (12b) suitable for crown corks, the device comprising a closed outer shell (13) including in its lower portion supporting means solid therewith and cooperating with the upper part of the neck of the bottle, an extractor element (16) being located inside the outer shell (13) and being able to move axially thereto between a first lower end-of-travel position (16a) and a second upper end-of-travel position (16b), the extractor element (16) including in its lower portion anchorage and clamping arm means which are equipped at their lower inner ends with claw means, which cooperate with the base of the upper head of the mushroom-shaped cork (11), and are equipped at their lower outer ends with elements (24) having an inclined surface and cooperating with thrust means (25) included on the inner surface of the support means, the device being characterised in that the support means are ring-type support means (14) free to rotate circumferentially with respect to the outer shell (13) but stationary thereto lengthwise, the ring-type support means (14) including in their lower portion supporting elements (21) facing inwards and cooperating with the upper part (22) of the neck (12) of the bottle, and in that the extractor element (16) is prevented from rotating with respect to the outer shell by the presence of outer guide elements cooperating with the elements having an inclined surface (24), and that the claw elements (20) are elastically pressed against the cork (11) and that the extractor element (16) includes on its outer surface outer screw thread means (23a) cooperating with mating inner screw thread means (23b) present on the inner face of the outer shell (13). Device to draw mushroom-shaped corks as in Claim 1, in which the extractor element (16) contains a cork-thrusting element (26) able to move axially and cooperating with resilient pressure means (27). Device to draw mushroom-shaped corks as in any claim hereinbefore, in which an antifriction ring (15) is included between the outer shell (13) and the supporting ring (14). Device to draw mushroom-shaped corks as in any claim hereinbefore, in which respective lower (16a) and upper (16b) end-of-travel positions of the extractor element (16) are determined by cooperation of a protrusion (17) included peripherally on the outside of the extractor element (16) with respective lower (18a) and upper (18b) undercuts included in the circumference of the inner surface of the outer shell (13). Device to draw mushroom-shaped corks as in any claim hereinbefore, which comprises a supporting ring (114) consisting of a first lower portion (114a) and a second upper portion (114b) which are constrained axially but can move circumferentially by a certain angle, the first lower portion (114a) of the supporting ring (114) containing a plurality of clamping wedges (30) arranged in a number and in positions coordinated with the anchorage and clamping arm means (19), the first lower portion (114a) of the supporting ring (114) having at least a first angular position (214a) of insertion of the device (110), in which the clamping wedges (30) are free of the anchorage and clamping arm means (19), and a second angular drawing position (214b), in which the clamping wedges (30) cooperate with the anchorage and clamping arm means (19). Device to draw mushroom-shaped corks as in Claim 5, in which the first lower portion (114a) of the supporting ring (114) comprises at its lower end auxiliary resilient supporting elements (121) which, in a third angular position (214c) of the first lower portion (114a) of the supporting ring (114), cooperate with coordinated ribs (32) during the step of positioning the device (110) on bottles having a neck (12b) suitable for a crown corks. Device to draw mushroom-shaped corks as in Claim 5 or 6, which includes reference notches (31) above and below the line of separation between the upper portion (114b) and lower portion (114a) of the supporting ring (114), these reference notches (31) indicating the different angular positions (214a-214b-214c) of the lower portion (114a) of the supporting ring (114).

Inventors: MARCORIN FRANCO, MUNINI DINO, TONEL IVO SANTE, MARCORIN, FRANCO, MUNINI, DINO, TONEL, IVO SANTE
Applicants: MICROSTAMP SRL
Application year: 1994
Main classification: B67B7
IPC codes: B67B7